Problem with file.encoding in Linux

Hello,
I am currently migrating a java project from Windows to Linux. The project is finally shaping up now, except for some encoding problems.
All configuration files are saved in ISO-8859-1/Cp1252 format. When reading and displaying these files in Swing (e.g. JTextArea), the special characters ���� are displayed wrong. I have tried to start the VM with -Dfile.encoding=ISO-8859-1 and -Dfile.encoding=Cp1252 without success (this is done in Eclipse under Linux).
I then tried the opposite. I created some UTF-8 files, started the application under Windows/Eclipse, read the files and displayed them in a JTextArea. Garbage characters were shown instead of ���� (as expected). I then used -Dfile.encoding=UTF-8, and voila, all characters were displayed correctly.
Why does not -Dfile.encoding work for ISO-8859-1/Linux but -Dfile.encoding work for UTF-8/Windows? Anyone here know?
The JRE I have been using is 1.4.2_06.
The Linux is a SuSE 10.0

Continue the "discussion" here:
http://forum.java.sun.com/thread.jspa?threadID=737153

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